Remove getdents from filters
Remove getdents from filters

It was only used by whitelistfs, which was removed in
bc81f3fe4a042a15343d2eab44da32d818ac1ade.

PiperOrigin-RevId: 212666374
Change-Id: Ia35e6dc9d68c1a3b015d5b5f71ea3e68e46c5bed

google/gvisor,google/gvisor,google/gvisor,google/gvisor,google/gvisor,google/gvisor,google/gvisor,google/gvisor